Eli5: how can a 14-15 hours flight trip can make you feel jet lagged but even a long 20 hours train journey doesn’t have the same effect?

Question

Is it because typically during these long flights there is a a change in multiple time zones and that messes your circadian rythm?

In: 541

Answer 1

Commercial jetliners have the cabin altitude pressure set to 8000ft. This fatigues the body faster then you would lower normal altitude on a train. Private jets can get cabin down to around 3000ft in some cases and have improved experience and less fatigue for passengers there.